下列哪项与牙咀嚼磨损的程度无关
A．牙齿的硬度
B．食物的硬度
C．咀嚼习惯
D．咀嚼肌张力
E．夜磨牙
参考答案：E
There is strong evidence that the of a father increases the probability that a youngster will use
drugs and engage in criminal activity. [ ]
A. absence
B. disappearance
C. attention
D. concern
药师应具备的一般准则有哪些？
